Allan Mahoney, Try a hard reset. Hold the power button for 30 min. seconds, release the power button and give it a go. If still not functioning properly do a factory reset( all stored data/apps/etc. will be deleted). Link below will provide step by step instruction to factory reset.
Before factory reset: Purchased content through Amazon will remain linked to your account, can be re-downloaded. Other third-party e-books and apps need to be saved separate, by attaching your Kindle to your laptop by using a USB cord. You can click drag everything over to special folder in your downloads section of computer to save it. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.
http://www.wikihow.com/Reset-a-Kindle
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Sadly, this did not work for me. Also a Paperwhite. Deregistered, registered again, but problem of constant stalling and rebooting persists. Frustrating!
crwdns2934271:0crwdnd2934271:0 Alex S. crwdne2934271:0
Same here. Purchased a study bible and my 7th gen paperwhite is still stuck in a reboot loop after deregistering/reregistering a couple times.
crwdns2934271:0crwdnd2934271:0 neelymichael1 crwdne2934271:0
If you have a apk of google play,Uninstall it.Works for me
crwdns2934271:0crwdnd2934271:0 returns at ushop crwdne2934271:0